Cooling-can.



v MIT- 1255s es No. A68l,8,76. Patented Sept. 3, I90I. E. S. CUSHMAN.

COOLING CAN'.

(Applimion md Feb. 11, 1901.)

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UNITED STATES PATENT GEEICE.

EDWARD S. CUSHMAN, OF CENTERVILLE, IOVA.

COOLING-CAN.

SPECIFICATION forming part of Letters Patent No. 681,876, dated September 3, 1901.

Application led February 1l, 1901` Serial No. 46,915. (No model.)

To all whom, t may concern:

Be it known that I, EDWARD S. CUSHMAN, a citizen of the United States, residing at Centerville, in the county of Appanoose and State of Iowa, have invented certain new and useful Improvements in Cooling-Cans, of which the following is a specification.

lNIy invention, although adapted for use wherever it is desired to rapidly cool a liquid without bringing it in actual contact with the cooling medium, is especially adapted and intended for use as a milkcooler and creamseparator, in which warm fresh milk may be rapidly chilled to a temperature which facilitates the separation of the cream from the milk, it being well understood that such separation is rapidly promoted by chilling the milk in any convenient manner, the most simple means being the thorough mixture with the warm milk of a sufficient quantity of cool The prime object of my invention, however, is to facilitate such chilling and separation without diluting the milk, the advantages of which are obvious.

Another object of, my invention is to produce such'a cooling apparatus which shall be compact, convenient, simple in construction, durable, easily kept thoroughly sweet and clean, (a consideration of prime importance in a milk-cooler,) and not liable to readily get out of repair.

While I am aware that it is not broadly new with me to produce a double cooling-can for the purposes named, I believethat in my construction as hereinafter described I have produced such a can which meets the objects above specified more thoroughly and efficiently than anything now known in this art.

The above and such other objects as may hereinafter appear are accomplished by the device shown in the accompanying drawings, in which- Figure l is an elevation of my improved cooling-can. Fig. 2 is a vertical section of the same on the line 2 2 of Fig. 3, showing in dotted lines the lid removed from the can. Fig. 3 is a horizontal section on the line 3 3 of Fig. 2, and Fig. 4 is a plan view of my can with the cover on.

Similar letters of reference indicate the securely soldered at the points c to the inner ends of the inwardly-bent walls a. The glass panel or gage-glass a is secured between the inner ends of these walls a', so as to form at this point apart of the wall of the inner can C. The inner can C is also provided with a vertical tube D, which extends entirely through the inner can C and opens into the space between the bottom of the can C and the bottom of the can A. The tubeD extends upwardly through the tube or collar b on the lid B. The bottom of the can C is formed so as to slope toward the glass panel a and is provided at the lower' end of its sloping bot; tom with a small depression, which connects with the faucet e.

My device is used as follows: The fresh milk is poured into the depression in the lid B without any particular care and immediately passes through the strainer Z) into the interior of the can C. Cold water of the desired temperature is then poured into the pipe D by means of a funnel or in any other convenient manner and immediately passes into the in terspace between the walls and bottoms of the cans A and C and fills this interspace as well as the interior of the tube D. Because of the large cooling-surfaces afforded by the corrugated walls of the can C, as well as by the central column of cool water in the tube D, the rapid cooling eiect so much desired to promote the ready separation of the cream from the milk is readily obtained and the rising of the cream quickly follows. As the glass gage a, forms a part of the wall of the can C, the rising of the cream can be observed from time to time, and whenever it has sufticiently IDD risen the milk, undiluted with Water, can be drawn off through the milk-faucet e until it is observed through the glass gage that all of the milk has been drawn off and the can G contains nothing but cream, whereupon the faucet e may be closed, the skimmed milk removed, the faucet e reopened, and the cream drawn oi. By virtue of the sloping bottom of the can C and the small additional depression, with which the milk-faucete makes irnmediate connection, it becomes a si mple-matter in this manner to draw off all of the skimmed milk without Wasting any of the cream. When through using the can, the warmed water may be drawn oif through the faucetf without removing the can,or, under conditions where the water may become Warm lmore rapidly than is desirable to procure the best results inseparating the cream, the water-faucetfmay be left open and a constant su pply of'fresh cool Water introduced at the Vtop of the tube D, thereby producing a circu- -lation of cool water and keeping a continu- I-Iaving thus described my invention, what 'Icl'ainn 'and desireto secure by Letters 'Pat- Y ent, is-

tween said inner and outer cans, and a Verti-v cal collar fitting over the upper end of said inner tube, said collar having an annular flange, substantially as described.

2. A cooling-can, comprising an outer shell, an inner shell or can so located as to provide an interspace between the walls and bottoms of the outer and inner shells, the Walls of said inner shell being corrugated vertically the entire length of said walls, a lid adapted to iit over said outer shell and provided with a depressed portion having a strainer at the bottom thereof, an inner tube extending downward through said inner can and the bottom thereof and opening into the space between said inner and outer cans, and a vertical collar fitting over the upper end of said inner tube, said collar having an annular iiange forming the inner seat for thestrainer, said cover, strainer and collar serving to support the upper end of said tube against lateral movement vand strain, substantially as described.

3. The combination in a cooling-can, of a water-can, a milk-can locatedwithin said water-can so as to provide an interspace between the walls and bottoms of said milk-can and said water-can, a vertical panel formed by turning in the walls of said Water-can and joining the edges of said turned-in portion to the Walls of said milk-camaI gage-glass 1of cated at the back of said panel so as to form a-portion of the wall of said milk-can, a collar `forming a support for the inner portion of said strainer, said lid, strainer and collar coacting to hold the upper end of the tube against lateral movement and strain, substantially as described.

EDWARD S. CUSHMAN.

Witnesses:

A. J. LEIsHMAN,. ELBERT PAYTON. 

